1 // Copyright 2011 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef COURGETTE_COURGETTE_H_
6 #define COURGETTE_COURGETTE_H_
8 #include <stddef.h> // Required to define size_t on GCC
10 #include "base/files/file.h"
11 #include "base/files/file_path.h"
15 // Status codes for Courgette APIs.
17 // Client code should only rely on the distintion between C_OK and the other
21 C_OK = 1, // Successful operation.
23 C_GENERAL_ERROR = 2, // Error other than listed below.
25 C_READ_OPEN_ERROR = 3, // Could not open input file for reading.
26 C_READ_ERROR = 4, // Could not read from opened input file.
28 C_WRITE_OPEN_ERROR = 3, // Could not open output file for writing.
29 C_WRITE_ERROR = 4, // Could not write to opened output file.
31 C_BAD_ENSEMBLE_MAGIC = 5, // Ensemble patch has bad magic.
32 C_BAD_ENSEMBLE_VERSION = 6, // Ensemble patch has wrong version.
33 C_BAD_ENSEMBLE_HEADER = 7, // Ensemble patch has corrupt header.
34 C_BAD_ENSEMBLE_CRC = 8, // Ensemble patch has corrupt data.
36 C_BAD_TRANSFORM = 12, // Transform mis-specified.
37 C_BAD_BASE = 13, // Base for transform malformed.
39 C_BINARY_DIFF_CRC_ERROR = 14, // Internal diff input doesn't have expected
43 C_STREAM_ERROR = 20, // Unexpected error from streams.h.
44 C_STREAM_NOT_CONSUMED = 21, // Stream has extra data, is expected to be
46 C_SERIALIZATION_FAILED = 22, //
47 C_DESERIALIZATION_FAILED = 23, //
48 C_INPUT_NOT_RECOGNIZED = 24, // Unrecognized input (not an executable).
49 C_DISASSEMBLY_FAILED = 25, //
50 C_ASSEMBLY_FAILED = 26, //
51 C_ADJUSTMENT_FAILED = 27, //
54 // What type of executable is something
55 // This is part of the patch format. Never reuse an id number.
60 // EXE_ELF_32_ARM_DEPRECATED = 3, // DEPRECATED.
68 class AssemblyProgram;
71 // Applies the patch to the bytes in |old| and writes the transformed ensemble
73 // Returns C_OK unless something went wrong.
74 Status ApplyEnsemblePatch(SourceStream* old, SourceStream* patch,
77 // Applies the patch in |patch_file| to the bytes in |old_file| and writes the
78 // transformed ensemble to |new_file|.
79 // Returns C_OK unless something went wrong.
80 // This function first validates that the patch file has a proper header, so the
81 // function can be used to 'try' a patch.
82 Status ApplyEnsemblePatch(base::File old_file,
83 base::File patch_file,
86 // Applies the patch in |patch_file_name| to the bytes in |old_file_name| and
87 // writes the transformed ensemble to |new_file_name|.
88 // Returns C_OK unless something went wrong.
89 // This function first validates that the patch file has a proper header, so the
90 // function can be used to 'try' a patch.
91 Status ApplyEnsemblePatch(const base::FilePath::CharType* old_file_name,
92 const base::FilePath::CharType* patch_file_name,
93 const base::FilePath::CharType* new_file_name);
95 // Generates a patch that will transform the bytes in |old| into the bytes in
97 // Returns C_OK unless something when wrong (unexpected).
98 Status GenerateEnsemblePatch(SourceStream* old, SourceStream* target,
101 // Serializes |encoded| into the stream set.
102 // Returns C_OK if succeeded, otherwise returns an error status.
103 Status WriteEncodedProgram(EncodedProgram* encoded, SinkStreamSet* sink);
105 // Assembles |encoded|, emitting the bytes into |buffer|.
106 // Returns C_OK if succeeded, otherwise returns an error status and leaves
107 // |buffer| in an undefined state.
108 Status Assemble(EncodedProgram* encoded, SinkStream* buffer);
110 // Adjusts |program| to look more like |model|.
112 Status Adjust(const AssemblyProgram& model, AssemblyProgram *program);
114 } // namespace courgette
116 #endif // COURGETTE_COURGETTE_H_